#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <string.h>
#include <assert.h>

void* my_memcpy(void* dest, const void* src, size_t num) {
	assert(dest && src);
	void* ret = dest;

	while (num--) {
		*(char*)dest = *(char*)src;
		dest = (char*)dest + 1;
		src = (char*)src + 1;
	}

	return ret;
}

int main() {
	int arr1[] = { 1,2,3,4,5,6,7,8,9,10 };
	int arr2[10] = { 0 };

	my_memcpy(arr2, arr1, sizeof(arr1));

	for (int i = 0; i < 9; i++) {
		printf("%d ", arr2[i]);
	}
	return 0;
}